Sample 92-035

NavDat sample number 57510 · RHYOLITE

Sample

Sample ID	92-035
Rock name	RHYOLITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	46.3213
Longitude	-121.703
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
20		15	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	70.33		WT%	XRF
TIO2	0.45		WT%	XRF
AL2O3	15.27		WT%	XRF
FEO	3.72		WT%	XRF
MNO	0.09		WT%	XRF
MGO	0.58		WT%	XRF
CAO	0.76		WT%	XRF
NA2O	6.2		WT%	XRF
K2O	2.47		WT%	XRF
P2O5	0.13		WT%	XRF

References

Swanson, Donald A (1994) Geologic map of the East Canyon Ridge Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1994.